Finding the Fourth Proportional to 19,720,257.40, 29,580,386.10 and 16,696,948.60
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Solution
The fourth proportional to 19,720,257.40, 29,580,386.10 and 16,696,948.60 is: 25,045,422.90
Step by Step Solution
- Step 1: Write the proportion equation
19,720,257.40 : 29,580,386.10 = 16,696,948.60 : x - Step 2: Convert to fraction form
19,720,257.40/29,580,386.10 = 16,696,948.60/x - Step 3: Cross multiply
19,720,257.40x = 29,580,386.10 × 16,696,948.60 - Step 4: Simplify right side
19,720,257.40x = 493,902,186,279,854.50 - Step 5: Solve for x
x = 493,902,186,279,854.50/19,720,257.40 - Step 6: Final answer
x = 25,045,422.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.